Digital Alert Systems 631A Instruction Sheet

Model 631A Program Timer Jr. Instruction Sheet
Description
Digital Alert Systems
Program Timer Jr. provides 2x1 (AB)
balanced stereo audio follow video
switching by timed commands. Six 'ON' and
six 'OFF' instructions may be stored in the
timer's memory. NO & NC contact actions
are also provided with each timed switch .
The test button, under the 'h+' and 'm+'
Buttons, is used to manually change the
status of the 2x1 switch.
Installation
1. Remove the four screws on the cover of
the 631A and install a AA battery in the
Specifications
Video
>70 dBmV @ 100 MHz.
>45 dBmV @ 450 MHz
Stereo Audio
DPDT w/screw terminals
Clock Accuracy
±1 sec per day @ 20°C
Battery Backup
1.5 VDC AA
Power Requirement
100-240 VAC ±2%, 50/60 Hz.
Power pack output; +12 VDC
Physical
2.00"H x 4.25"W x 6.50"D
holder on the underside of the PC
board. Re-install the cover screws.
2. Connect your main stereo audio/video
source to the primary inputs.
3. Connect your alternate stereo
audio/video source to the secondary
inputs.
4. Connect the 631A's stereo audio/video
outputs to your equipment's inputs.
5. Connect the furnished power supply's
WH wire to the +12 VDC on the 631A,
and the BK wire to GND.
6. Apply AC power, the display will show
'OFF' and '00:00'.